Radial car-truck.



PATENTED MAY 12, 190.3.'A

R. L. BLLBRY. RADIAL GAR TRUCK.

APPLICATION FILED JUNE 7, 1902.

3 SHEETS- *SHEET 1.

N0 MODEL.

lm III A` Q l I I l No. 727,918. PATRNTRD MAY 12, 190.3.

` Rl L. RLLRRY.

RADIAL GAR TRUCK.

APPLICATION FILBDVJUNE 7, 1902.

N0 MODEL. 8 SHEETS-SHEET 2.

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No. 727,918. l PATENTEI MAY 12,- 1903.

R'. L. BLLERY. RADIAL GAR TRUCK.

APPLICATION FILED JUNE 7, 1902.

No MODEL. a SHEETS-SHEET s.

1) u mum n UNITED STATES Patented May 12, 1903.

PATENT OFFICE.

ROBERT L. ELLERY, OF PORTSMOUTH, NEW HAMPSHIRE, ASSIGNOR TO SHERBURN M. MERRILL, TRUSTEE, OF BOSTON, MASSACHUSETTS.

RADIAL CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 727,918, dated May 12, 1903.

Application filed J'nue 7, 1902. Serial No. 110,604. (No model.)

T all whom t may concern:

Be it known that I, ROBERT L. ELLERY, a citizen of the United States, residing at Portsmouth, in the county of Rockingham and State of New Hampshire, have invented new and useful Improvements in Radial Cary Trucks, (Case A,) of which the following is a specification.

This invention relates to railway car-trucks, and is'particularly adapted to car-trucks for electric railways in which the motor is supported partly upon the axle and partly upon the truck-frame.

The object of the invention is to providea car-truck which V*is so constructed that the axles of each truck will readily adjust themselves to a radial position as the truck and car-body are passing around a curve, thus greatly diminishing the amount of friction between the car-wheels and thetrack.

The invention consists of two bogiespivoted one to the other at a common point located therebetween, each of said bogies consisting of a truck-frame supported upon an axle and a pair of wheels and a king-bolt center bar pivoted at each end to one of said bogies.

The invention again consists in the instrumentalities hereinbefore set forth in combination with a car-body supported upon said bogies and pivoted to said king-bolt center bar between the ends thereof and means connecting said car-body to one of said Ybogies,

whereby said bogies and the car-axles upon which they rest are moved to assume a radial position with relation to the curve around which they are passing.

The invention again consists in a pair of bogies pivoted to each other at a point lo-l different angles with relation to each other as said car-body passes around a curve.

The invention again consists in the manner of supporting the weight of the car-body upon the bogie-frames, said means consisting of two eqi'ializing-bars extending lengthwise of and beneath said frames, links depending from said belgie-frames and connected to said equaliZing-bars, and a spring-holster upon which said car-body rests extending transversely of the truck and supported upon said equalizing-bars.

The invention still further consists in thev particular manner in which the equalizingbars are suspended from the truck-frames, consisting in links depending from each of said truck-frames and connected to said equalizing-bars, the dependinglinks upon one of said truck-frames converging downwardly toward the depending links upon the `other `tion assumed thereby when passing along'a straight track. Fig. 2 is a side elevation of the parts shown in Fig. 1. Fig. 3 is a plan View of two trucks as the same appear in rounding a curve, the car-body and connecting-links being shown in dotted lines and the truck at the right being partly broken away to'more clearly illustrate the construction thereof. Fig. 4 is an enlarged plan view of the truck shown at the right of Fig. 1, the.

car-body being removed and the king-bolt and linkpin being shown in section, said truck being shown as it appears when moving along a straight track with the axlespar- Fig. 5 is a vertical sec allel to each other.

tion taken on line 5 5 of Fig. 4. Fig. 6 is a plan View of the truck shown at the right of Fig. 3, showing the sameas it appearsl upon a curve. Fig. 7 isa detail plan View of a portion of two bogie-truck frames, illustrating the manner in which they are pivoted together.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 10 is the truck as awhole, consisting of two bogie-trucks 11 12, having truck-frames 13 14, respectively, pivoted together at a common point located between said frames 13 and 14 by a pivotal pin 15. Said pivotal pin passes through two brackets 16 17, fastened, respectively, to the truckframes 13 and 14 and one tongued into the other. A bracket 18 is fastened to the inner face of the side 19 of the truck 13 and projects inwardly therefrom toward the axle 20, upon which axle the frame 13 is supported in the usual manner, said axle being provided with a pair of wheels 2l 21. A bracket 22 is fast to the inner face of the side 23 of the truck-frame 14 and projects inwardly therefrom toward the axle 24 of the bogie 12, said axle 24 having a pair of wheels 25 25 fast thereto. Each of the brackets 18 and 22 has a pivotal pin 26 fast thereto and projecting upwardly therefrom to receive the opposite ends of the king-bolt center bar 27, which extends longitudinally of the truck 10 and is pivotally connected at its ends by said pins 26 to the brackets 18 and 22 or to the bogietrucks 11 and 12. The holes in the king-bolt center bar 27, through which the studs or pivotal pins 26 project, are made slightly larger in diameter than the diameter of said pins'in order to allow slight play between said kingbolt center bar and the pivotal pins 26.

The car-body 28 is pivotally connected by a king-bolt 29 to the center bar 27, and through said king-bolt and center bar 27 all side and end thrust of the car-body is transmitted to the bogie-trucks 11 and 12. The car-body is still further connected to the bogie-trucks by a pair of links 3() 31, said links being pivotally connected at 32 33, respectively, to the truck-frame 14 and by acorn mon pivotal linkpin 34 to the car-body 28. The Weight of the car is preferably supported u pon friction-rolls 35 35, journaled to rotate upon a bolster 36, extending transversely of the truck 10 and resting at each end upon a spring 37, said springs 37 resting upon equalizing-bars 38 3S. Each of said equalizing-bars extends longitudinally of the truck-frame and beneath said truck-frame and is supported upon links 39 39 and 40 40. The pair ot' links 39 39 are connected at their upper ends to the truck-frame 13 and extend downwardly therethrough upon opposite sides of the axle 2O and are connected at their lower ends to the equalizingbar 38, at the right-hand end thereof. The lefthand end of each of the equalizing-bars 38 is supported by another pair of parallel links extending downwardly from the truck-frame 14 and connected at their lower ends to the lefthand end of the equaliZing-bar 38, Fig. 5. The links 39 39 converge toward the links 40 40 as said links extend downwardly from the truck-frames 13 and 14, respectively.

The general operation of my improved truck is as follows: When in its normal position,

the axles 20 and 24 ot' each of the trucks are parallel to each other, and the longitudinal median line of the car-body coincides with the longitudinal median line of the truck 10 and of the center bar 27, said longitudinal median line passing through the pivots 26 26, pivotal king-bolt 29, and pivotal link-pin 34, as shown in Figs. 1 and 4; but as the trucks, together with the car-body, pass around a curve, the median line ot' the car-body stands at varying angles with the median line of the center bar 27 or of the truck 10 as a Whole, as seen in Fig. 3, the effect being the same as to suppose the truck to remain stationary and rotate the carbody upon the king pin 29. This relative rotation of the car-body to the truck-frame or to the center bar 27 moves the pivotal link-pin 34 to one side or the other of the median line of said center bar, or, in other Words, rotates said pin around the king-pin 29 as a center, and this motion being transmitted through the links 30 and 31 to the truck-frame 14 rotates said truck-frame 14, together with the axle 24 and wheels 25, about the pivotal pin 26 as a center. At the saine time the bogie-truck 11, consisting of the frame 13, axle 20, and wheels 21, is rotated through the pivotal pin 15 in the opposite direction about the pivot 26, and thus as the angle of the car-body to the truck is changed in passing around a curve the relative position of the axles 2O and 24 is changed from a parallel position to an angle in which said axles assume a radial position with relation to the curve around which the truck is passing. Assuming the truck to be moving in the direction of the arrow, Figs. 1 and 3, the leading truck will be rotated upon its pivot by reason of the iianges upon the wheels of the leading pair of wheels being guided by the curve of the track, and as said truck is swung upon its pivot the axles will be thrown into a radial position with relation tothe curve by means of the links connecting the car-body to the bogietruck frame, as hereinbefore described. As the leading truck passes around the curve the car-body is carried therewith and is rotated upon the rear truck, thus bringing the median line of said car-body at an angle with the median line of the truck or of the center bar 27 and again rotating the bogie-trucks until the axles 2() and 24 assume a position radial to the curve around which said truck is passing.

By the particular manner in which I construct my improved truck and attach the carbody thereto it will be seen that there is an undisturbed space provided between each of the axles and the end of the truck wherein a motor may be conveniently placed, a portion of the weight of the motor resting upon the axle 2O or 24 and the remainder ofthe weight upon the spring-supporting bar 41 or 42, as the case may be.

As hereinbefore set forth, the links 39 39 converge toward the links 40 40 as they extend downwardly from the truck-frames 13 IOO and '14, respectively, the object of thus'supporting the car-body being to counteract ther centrifugal action whereby the car tends to leave the track in rounding a curve. In-Fig. 5 the position of the links is shown when the truck is on a straight track and the wheels and axles are in the position shown in Fig. 4 in plan view. As the truck rounds the curve the wheels and axles assume the position shown in Fig. 6, thus bringing the truckfraines 13 and le upon the inner side of the curve nearer to each other, and consequently carrying the upper ends of the links 39 and to a substantially vertical position above the lower ends of said links and allowing the equalizing-bar 38, together -with the spring 37 and the end of the bolster on the inner side of the curve, to drop. On the outer side of the curve the upper ends of the links 39 and 40 will be carried away from each other,- or toward the right and left, respectively, in Fig. 5, thus raising the equalizing-bar 38, the spring 37, and the end Vof the bolster which rests thereon, the whole eect being to raise the bolster upon the outer side of the curve and depress it upon the inner side of the curve, and as the car-body rests upon the bolster a like action will be imparted to said car-body, raising the same upon the outside of the track as it rounds a curve and lower-A 1. A car-truck comprising two bogies piv-l oted one to the other at a common point located therebetween; in combination with a car-body supported upon saidibogies, a kingbolt center bar pivoted at each end to one ot' said bogies and between said ends to said carbody, the longitudinal median lines of said car-bod)7 and center bar being normally coin-A cident, and links pivotally connected at one end to said car-body and at the other end to one of said bogies, said links acting to move said bogies into different angles with relation to eachother as said car-body assumes varying angles with relation to said centerbar.

2. A car-truck comprising two truck-frames, each supported upon an axle and pair of wheels, a pin pivotally connecting said truckfrarnes together, and a king-bolt center bar pivotally connected to each of said truckframes; in combination with a car-body pivoted to said center'bar, and a link,one end of said link pivotally connected to said carbody, the other end to one of said truckframes.

3. Acar-truck comprising two truck-frames pivotally connected together, each of said truck-frames supported upon au axle and pair of wheels, and a king-bolt center bar pivotally connected to each of said truck-frames; in combination with a car-body pivoted to said `center bar, and a llink one` end vof said link pivotally connected to said car-body, the other` end to one of said truck-frames.

4. A car-truck comprising two truck-frames `each supported upon an axle and pair of wheels, said truck-frames pivotally connected at a common point located therebetween, a

king-bolt-center-bar pivotally connected to each of said truck-frames; in combination witha car-bodypivoted to said centerbar, and a pair of links one end of each of said y links pivoted at a common point to said carbody, the other end of each of said links pivoted to one of said trucks upon opposite sides of a vertical medianV plane extending lengthi wise of said carfbody. p

5. Acar-truck comprising two truck-frames, each supported upon an axle and pair of wheels, a pin pivotally connecting said truckframes together, and a king-bolt center bar pivotally connected to each ot'- said truckframes; in combination with a car-bodypivoted to said center bar, a link, one end of saidlink pivotally connected to said carbody,rthe Y t wheels, a pin pivotally connecting said Vtruckframes together, andra king-bolt center bar pivotally connected to each of said truckframes; in combination, with a' car-body pivoted to said center bar, a link, one 'end of said link pivotally connected to said car body, the other-'end to one ofsaid-truck- 7. A car-truck comprising two truck-frames, each supported upon an axle and-pairof IOO f frames, and a spring-bolster uponwhich said f. car-body rests located between and supported .upon said truck-frames.

wheels, a pin pivotally connecting said truckframes together, and a king-.bolt center-bar pivotally connected toveachot'- said truck-f 1 frames; incombination with a .car-body, piv.

oted to said centerb'ar, a'- link one endgofsaid link pivotallytconnected fto said car-V body the other endto one of said truckframes, two equalizing-bars extending lengthwise and supported upon said truck-frames,v

and a bolster upon which said car-body rests ported upon said equalizing-bars;

t extending transversely of saidltruckand supi 8. A car-truck comprising two truck-frames,v

eachl supported upon an axle and pairiof Wheels,.a pin pivotally connecting said truckframes together, and a king-bolt center bar pivotally connected to each of saidtruckframes; in combinationwith a car-body pivoted to said. center bar, a link, 'fone end of said link pivotally connected tof said carbody, the other end to oneA of fsaidtruckframes, two equalizing-bars extending lengthwise of and beneath said truck-framesfthe links depending from said truck-frames connected to said equalizing-bars, and a spring bolster upon which said car-body rests, extending transversely of said truck and supported upon said equalizing-bars.

9. A car-truck comprising two truck-frames, each supported upon an axle and pair of wheels, a pin pivotally connecting said truckfraines together, and a king-bolt center bar pivotally connected to each of said truckframes; in combination with a car-body pivoted to said center bar, two equalizing-bars extending lengthwise of and beneath said truck-frames, and links depending from each of said truck-frames and connected to said equalizing-bars, the depending links upon one of said truck-frames converging downwardly toward the depending links upon the other of said truck-frames.

l0. In a car-truck, two bogies pivotally connected together, said bogies each comprising a truck-frame, an axle, and a pair of wheels; in combination with an equalizing-bar extendinglengthwise of and beneath said bogieframes, and a pair of links depending from each of said truck-frames, one link of each of said pairs of links located upon opposite sides of each axle, the lower ends of said links connected to said equalizing-bar, the pair of links upon one of said truck-frames converging downwardly toward the pair of links upon the other of said truck-frames.

l1. A car-truck comprising two bogies pivoted one to the other at a common point located therebetween, said bogies each comprising a truck-frame, an axle and a pair of wheels; and a bracket fast to each of said frames upon the side thereof adjacent to the other bogie-frame and projecting inwardly therefrom toward the axle, and a king-bolt center bar pivoted at each end to one of said brackets.

12. A car-truck comprising two bogies pivoted one to the other at a common point located therebetween; in combination with a car-body, a king-bolt center bar pivoted at each end to one of said bogies and between said ends to said car-body in such a manner that all side and end thrust of said car-body is taken by said center bar and transferred therethrough to said trucks, and independ ent means to receive a portion of the weight of said car-body, and through said means to a' 'rafters transfer one-half;` of said portion to each of said bogies.

13. A car-truck comprising two bogies pivoted one to the other at a common point located therebetween; in combination with a car-body, a king-bolt center bar pivoted at each end to one of said bogies and between said ends to said car-body in such a manner that all side and end thrust of said ear-body is taken by said center bar and transferred therethrough to said trucks, two equaliziugbars extending lengthwise of and beneath said bogie-frames, links depending from said bogie-frames connected to said equalizingbars, and a spring-bolster upon which said carbody rests, extending transversely of said truck and supported upon said equalizingbars.

14. A car-truck comprising two bogies, pivoted one to the other at a common point located therebetween, said bogies each comprising a truck-frame, an axle and a pair of wheels; said frames each provided with a clear space at one side of the axle adapted to receive a motor; a bracket fast to each of said frames upon the side thereof adjacent to the other bogie-frame and projecting inwardly therefrom toward the axle, and a kingbolt center bar pivoted at each end to one of said brackets.

l5. Acar-truckcomprisingtwotruck-frames, each supported upon an axle and a pair of wheels, a pin pivotally connecting said truckframes together, and a king-bolt center bar pivotally connected to each of said truckframes; in combination with a car-body pivoted to said center bar, means connecting said car-body to one of said truck-frames and acting to move said truck-frames into dilterent angles with relation to each other as said car-body is rotated about the point at which it is pivoted to said center bar, and a springbolster upon which said car-body rests located between and supported upon said truckframes.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ROBERT L. ELLERY.

Witnesses:

CHARLES S. GooDING, ANNIE J. DAILEY.

IOO 

